Swiveling chair



v ,637,846 Aug. 2, 1927-'s A. J. ADAMS A SWIVELING CHAIR Filed July 27. 1925 Irufenf dams Patented ug. 2, 1927.

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providev asimple andi improvedfseat frame for a` metallic vswivelingk chair `and/an im; proved manner of securing the center''post to the seatfra'me' f These. objects of" the invention; togetherV with others as Well as the many advantages thereof, will4 inorefully appearasfl proceed with my specification.

Figg'l 'is a view in front elevation ofi a metallic chairof the swiveling type embodying my invention.'y j y Fig, 2 is afhori'zontal sectional view as talen'on the line' Q Q'foflig.- 1F andT shows theseatframe as lookedat from below. 1

Fig. 3^i'sV a detailfk vertical sectional-view on anv `enlargedA 'scale as taken yonfthe f -line 3 3 ofFig. 'f 'f Referring now'in :detail tok that embodiment of the invention illustrated in the accompanying drawings 1 indicates the supporting legs which are grouped together at their top ends and are there secured to vertically spaced spiders 2 to form the standard for the chair. 3 indicates the seat frame as a whole to which a center post 4 is secured, which center post is j ournalled in the sleeves 2 in a manner permitting a vertical adjustment therein as ywell as a rotating bearing as is well known in swiveliug chairs.

The seat frame which is rectangular in plan, is wider than it is deep and includes front and rear members 5 5 vand side members 6 6. Said side members vare in the form of angle bars having inwardly facing horizontal top flanges 7 7 and vertically disposed outer side flanges 8 8. The ends of said horizontal flanges are extended beyond the vertical flanges and are bent downwardly to provide end ears 9 9. The front and rear members 5 5 are in the form of vertically edgewise arranged bars which are bowed downwardly between their ends as best shown in Fig. 1. The ends of said bars are bent at a right angle as at 10 10 and engage the ends of the vertical flanges of the side angle bars and are secured thereto as for instance by rivets. YTheisaid front and rear bars are connected at points between their ends by' intermediates'vertically-r edgewise arranged YbarsA 11 11 each *of which includes bent over rightlangularly disposed ears 1Q 1Q.which'areisecuredto saidy frontand rear Ibars.; respectively as:- for instanceby-rivetsasshown; i f

` A sea-tf member13; formedlfto the; bowaof the front-.and rearf inelnbersofthevseat fra1ne, rcsts at its ends; upon k the :horizontal k61, and is secured thereto asbyf means-of the belts 1 4; The said seat may or-may not Y beapadded as'isqdesired.- f5 I f Between the intermediate bars flanges 75-1-7 "of the angle han side members tl'ie-fseatfframe, is located a? postl'receving spider '1 -5" as bestlshow-n in lig:l Said spiderfincludesa lhl'ib` 16- which is.v arranged centrally of the seat# `frameandf in sa-idilijub .the topf endof the seat post# 4- is; firmly anchored; 'ExtendingA radially from 4said spider fhub is plr'iralityl off arms 171 which are arranged atY an( angl'elotI substantially 9.09- tothe intermediate brace bars andi each ar-m terminates in an ear-17?* arranged par? allel with said intermediate brace bars 11- 11 and engaging the inner surfaces thereof1 -as best shown in Fig. 2. Said ears are secured to said brace-bars in any suitable manner and as shown herein they are riveted to said bars. A back restfmember 18 is supported by side arms 19 and braces 20 from the side members 6 6 of the frame in any lsuitable manner.

By the arrangement above described the post may be anchored in the spider hub after which the spiderarms are positioned with respect to the brace bars, which of course have been assembled in the seat fra-me. Such a construction -is advantageous not only `because ease of assembly but also because it. is light, in weightyet strong' and rigid. Again the spider not only acts to connect the post to the seat frame but also acts to rigidly brace the seat frame as a whole, so that weight is eliminated 'without sacrificing strength and rigidity.

My improved seat frame may be readily soV made from stock purchased in open market and does not call for the necessity of eX- pensivemachine operations. Ity provides a unitary structure which may be readily made at a relatively low cost. .f

` While in describing my invention, I have referred to certain details ofj mechanicall ins y construction and arrangement ojl parts, I do not wish tobe limited.thereto-except asmay be pointed out in the appended claims. t

`l". Acairemb dying thereinaiseat `lrame comprising angle bar' side membersliavinga top horlzontal flange and verticalUA side, flanges, vertlcally edgewlse arrangeddront" and rear members, havingftheir `end s bent over to engage upon the vertical flanges oli sa1d;s1de 4members, brace members 4between and Viarallel with said side members and 4se-v cure vat the/ends to sald 'front-and rear members, and a seatmember resting at 1pts endsupon and secured tolthe horizontal y flanges of said angle bar side -members.

L 2; A chair embodyingtherein a seatvframe comprisinggangle barside members` having a cop;horizontal flange and `vertical l side flanges, vertically edgewise Varranged ,front f andvfrear" membershaving their endsbent over toI engage` upon `the s vertical flanges ol" said side members, the ends of saidhorizontal flanges of the angle barsde membersbeing bentoverto provide ears engaged with andsecuredxtosaid` front andmrear `lrame v members, bracemembers y county-,Citing A i rsai d intermediate brace bars arallel with said side members and secure to saidfiront and l rear members, a spider arrangedfbetweenvr said brace members and including a hub, a

'pluralityof arms extending away fromsaid lztub-anol securedat their outer ends to said brace members, and a post fixed `at its top end insaid spider hub. v 4. chair embodying therein, a seat frame comprising y sidemembers, and vertically edgewise arranged front and rear members,

lvertically,edgewise arranged brace bars par-` allelwth said side members and having bent ends which are secured to said front and rear trame members, a spider larranged between -said brace ymembers and includinga hub, aV plurality `of angularl d1sposed arms hav'-l ingends parallel` wit and Vsecured to said brace members, and a postsecuredat itstop endz'in said hub of thespider.`

A` chair` `frame `cmnprising side angle bar members each having a horizontal flange and' a vertical flange,and vertically edgewise arranged front and rear frame members, said liront andrear frame members having ends which are4 bent over to engage and are se cured to the endportions of the"` vertical flangejof said side members, and the ends of the horizontal flanges being bent vertically7 to engage with said front and rear frame y members near their a bent` over ends. i

l. `In testimony whereof, y I" have hereunto set my hand, this 6th day of July, i925.,` Y QV, f i; y ARTHUR JADAMS. 

